i think if anything, a Water Fast can be a healthy example to someone with an ED. Especially those people who consume just very little calories every day. They will never stop buring muscle tissue and go in to ketosis burning.
the site already has a disclaimer, the info is out there for whoever wants it, and i think it's a good thing to promote a healthy method of weight loss like Water Fasting to anyone that needs it.
i also think it's nice of the mods to post resources for people that need it too :)